Martin's answer was not satisfactory for me. The resulting symbol does not match the interior product symbol I'm familiar with from my texts. The symbol should be fairly large, outlining the bottom-most and right-most edge of the glyph's rendering box. Can anyone give another answer?
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Joe HannonDec 19 '11 at 19:17

On an unrelated note, detexify wasn't able to recognize this particular symbol, nor did it suggest anything even remotely similar. It can be found, however, in the CTAN comprehensive symbol list.
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Martin TapankovSep 26 '10 at 18:58